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CVE-2018-18913

7.8 · HIGH

Opera before 57.0.3098.106 is vulnerable to a DLL Search Order hijacking attack where an attacker can send a ZIP archive composed of an HTML page along with a malicious DLL to the target.

Published Mar 21, 2019CWE-426EPSS 0.40%

Overview

CVE-2018-18913 is a high-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Opera before 57.0.3098.106 is vulnerable to a DLL Search Order hijacking attack where an attacker can send a ZIP archive composed of an HTML page along with a malicious DLL to the target. Once the document is opened, it may allow the attacker to take full control of the system from any location within the system. The issue lies in the loading of the shcore.dll and dcomp.dll files: these files are being searched for by the program in the same system-wide directory where the HTML file is executed.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblogs.opera.com/desktop/changelog-for-57/Reflucideustech.blogspot.com/2019/02/opera-search-order-hijacking-cve-2018-18913.htmlRefblogs.opera.com/desktop/changelog-for-57/Reflucideustech.blogspot.com/2019/02/opera-search-order-hijacking-cve-2018-18913.html

How CyberStrike helps

Frequently asked questions

What is CVE-2018-18913?

CVE-2018-18913 is a high-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2018-18913?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-18913?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-18913?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-18913 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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